About this 3D model

Boxes of various sizes, easy to use for electronics prototyping.Choose a box of a certain size and choose the corresponding cover.The cover is attached to the box with four screws. Wall thickness is 1.2mm. One should choose a rather high infill if one intends to drill holes in it after printing (for wires, led's, etc). Of course it is better to edit this thing and print it including the desired holes. Hey, for what reason did you buy that 3D-printer? The cover inside is 0,2mm smaller than the box to allow for small printing errors.